condition	mean	min	max
0 h after light	18.511400000000002	16.9524	20.0704
4 h after light	8.17163	4.18746	12.1558
8 h after light	5.664045	5.22925	6.09884
4 h after dark	16.177799999999998	15.6404	16.7152
8 h after dark	16.5198	14.6723	18.3673
12 h after dark	17.5148	16.5609	18.4687